Another Pinball Rotisserie having 3d printed pivots, locking knobs, carrier protectors, plus instructions:
https://www.thingiverse.com/thing:4416849
This design uses doubled 2x4 for the uprights, cut to whatever length the builder desires for work height.
The cross-bases are 2x4, and the "feet" are 1x4.
The hardware is 1/4"-20 nuts, and 1/4"-20 hex screws of various lengths, plus a few wing nuts.
The playfield carriers are typical 1-1/2" x 1-1/2" plated, punched angle steel.